Author:
González Rueda Juan Ramón,Galparsoro Catalán Agustín,de Paz Hermoso Víctor Manuel,Riad Deglow Elena,Zubizarreta-Macho Álvaro,Pato Mourelo Jesús,Montero Martín Javier,Hernández Montero Sofía
Abstract
Abstract
Background
Zygomatic implants are widely used in the rehabilitation of severely atrophic maxillae, but implant placement is not without risks, and it can potentially cause damage to related anatomical structures. The aim of this study was to perform a comparative analysis of the accuracy of static navigation systems in placing zygomatic dental implants in comparison to dynamic navigation systems.
Methods
Sixty zygomatic dental implants were randomly allocated to one of three study groups, categorized by which implant placement strategy was used: A: computer-aided static navigation system (n = 20) (GI); B: computer-aided dynamic navigation system (n = 20) (NI); or C: free-hand technique (n = 20) (FHI). For the computer-aided study groups, a preoperative cone-beam computed tomography (CBCT) scan of the existing situation was performed in order to plan the approach to be used during surgery. Four zygomatic dental implants were inserted in each of fifteen polyurethane stereolithographic models (n = 15), with a postoperative CBCT scan taken after the intervention. The pre- and postoperative CBCT scans were then uploaded to a software program used in dental implantology to analyze the angular deviations, apical end point, and coronal entry point. Student’s t-test was used to analyze the results.
Results
The results found statistically significant differences in apical end-point deviations between the FHI and NI (p = 0.0053) and FHI and GI (p = 0.0004) groups. There were also statistically significant differences between the angular deviations of the FHI and GI groups (p = 0.0043).
Conclusions
The manual free-hand technique may enable more accurate placement of zygomatic dental implants than computer-assisted surgical techniques due to the different learning curves required for each zygomatic dental implant placement techniques.
Publisher
Springer Science and Business Media LLC
Reference50 articles.
1. Aparicio C, Manresa C, Francisco K, Ouazzani W, Claros P, Potau JM, Aparicio A. The long-term use of zygomatic implants: a 10-year clinical and radiographic report. Clin Implant Dent Relat Res. 2014;16:447–59. https://doi.org/10.1111/cid.12007.
2. Nyström E, Ahlqvist J, Legrell PE, Kahnberg KE. Bone graft remodelling and implant success rate in the treatment of the severely resorbed maxilla: a 5-year longitudinal study. Int J Oral Maxillofac Surg. 2002;31:158–64. https://doi.org/10.1054/ijom.2001.0197.
3. Nyström E, Nilson H, Gunne J, Lundgren S. Reconstruction of the atrophic maxilla with interpositional bone grafting/Le Fort I osteotomy and endosteal implants: a 11–16 year follow-up. Int J Oral Maxillofac Surg. 2009;38:1–6. https://doi.org/10.1016/j.ijom.2008.10.009.
4. Jensen J, Sindet-Pedersen S, Oliver AJ. Varying treatment strategies for reconstruction of maxillary atrophy with implants: results in 98 patients. J Oral Maxillofac Surg. 1994;52:210–6. https://doi.org/10.1016/0278-2391(94)90283-6. discussion 216-8.
5. Kahnberg KE, Nilsson P, Rasmusson L. Le Fort I osteotomy with interpositional bone grafts and implants for rehabilitation of the severely resorbed maxilla: a 2-stage procedure. Int J Oral Maxillofac Implants. 1999;14:571–8.
Cited by
4 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献